ask many ------(question) as possible.question用单数还是复数?

ask many ______(question) as possible.question用单数还是复数?
如果改成ask many _____(question) as possible又要怎么填?填上正确的单词后这两个句子相等吗?
太急了，应该是(1)ask ____(question) as many as possible.(2)ask as many _____(question) as possible.（3）ask many ____（question） as many as possible.这几个句子都是本人想出来的，不排除有错误，如果有错误，烦请大家指出来。如果没有错误，那就请帮忙填空。填完后尽量说下理由，顺便说下这几个句子相等吗，如果不等，各自的意思是什么。